| Attribute | Description | Physical Name | Domain | Data Type | Foreign Key Table |
| CustomerOrderID (FK)(PK) | A unique system assigned identifier for the CustomerOrder. | ID_ORD | Identity | integer | CustomerOrderChargeTaxLineItem(DO_CTOLTM_CHG_TX) |
| CustomerOrderLineItemSequenceNumber (FK)(PK) | A unique system assigned identifier for the LineItem within the confines of the CustomerOrder. | IC_OR_LTM | LineNumber | smallint | CustomerOrderChargeTaxLineItem(DO_CTOLTM_CHG_TX) |
| IssuedToPartyID (FK) | A unique, system assigned identity for a Party. | ID_PRTY_ISS_TO | Identity | integer | TaxCertificate(PA_TX_CF) |
| TaxCertificateSequenceNumber (FK) | A sequential counter used to uniquely identify a tax certificate for a specific party. | AI_PA_TX_CF | LineNumber | smallint | TaxCertificate(PA_TX_CF) |